He was investigated by the Dail standards committee to see if he had complied with the rules on declaring all land or shares worth over €13,000 in a year.

The committee found in its report that the Tipperary South TD should have included his 95pc shareholding in a Tipperary-based company three years ago in his Dail declaration. It said that Abbeygreen Consulting owned land worth €300,000 at the time – well in excess of the €13,000 limit beyond which assets have to be declared.

The committee said that even when the cost of paying creditors and winding up the company were taken into account, Mr Lowry (right) still had a "registrable interest" of between €13,904-€37,654. But the committee found Mr Lowry had acted in "good faith". He has now been ordered to change his Dail declaration for 2009 within the next 28 days.

Meanwhile, Mr Flanagan is backing a campaign to halt the addition of fluoride to drinking water. Aisling Fitzgibbon has been seeking donations to help her to challenge the addition of "dangerous" chemicals to water.

She has said that she opposes the addiction of chemicals to water until they have been "proven safe" for human consumption.

And the Roscommon-South Leitrim deputy posed with Ms Fitzgibbon and supporter Aisling Hudson on Dublin's Grafton Street yesterday to help her campaign.

Flouride has been added to drinking water in Ireland for over 50 years to help with dental hygiene. Numerous studies have shown no scientific evidence to suggest that the chemical is a danger to human health in the quantities that are used.